Hair dysplasias involve various hair disorders causing fragility, breakage, and poor hair adhesion.
44 citations
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July 2013 in “Journal of the American Academy of Dermatology” Poliosis circumscripta is a patch of white hair caused by lack of melanin, linked to genetic and acquired conditions.
26 citations
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June 2003 in “PubMed” Alpha-difluoromethylornithine prevents cancer in mice but causes hair loss.
3 citations
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January 2017 in “Dermatology online journal” Dermoscopy helped diagnose a rare hair disorder in a 2-year-old boy.
September 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” Three genes linked to the development of trichilemmal cysts were found.
Genetic factors might cause fibrosing alopecia linked to hair shaft abnormalities.
2 citations
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January 1989 Tay syndrome is a unique genetic disorder causing skin, hair, and developmental issues.
9 citations
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June 1999 in “Journal of Investigative Dermatology” The HPV type 11 region activates hair-specific gene expression in mice.
2 citations
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March 2023 in “Skin research and technology” Temporal triangular alopecia in infants is mostly seen in males at birth, with unique features that help with diagnosis.
13 citations
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April 1982 in “The Journal of Dermatology” Poly(ADP-ribose) synthesis is linked to skin cell differentiation.
21 citations
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April 2004 in “Australasian Journal of Dermatology” A 3-year-old girl has a rare condition causing sparse hair and nail issues, with minimal improvement from treatment.
54 citations
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November 1986 in “Journal of the American Academy of Dermatology” Generalized trichoepitheliomas with hair loss may indicate myasthenia gravis.
71 citations
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May 2019 in “Rheumatology” Tph cells are linked to the severity of systemic lupus erythematosus.
Tricholemmoma is linked to Cowden syndrome and can be benign or malignant.
4 citations
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January 2020 in “Dermatology Online Journal” Congenital atrichia with papular lesions causes permanent hair loss and skin bumps due to a gene mutation.
July 2025 in “Frontiers in Medicine” Mutations in the LIPH gene cause woolly hair in a child.
July 2025 in “Actas Dermo-Sifiliográficas” Trichodynia is a challenging scalp condition to treat, needing gentle care and more research for better solutions.
6 citations
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June 2010 in “Dermatologica Sinica” Panfolliculoma is a rare, non-cancerous growth related to hair follicles.
January 1999 in “Journal of Investigative Dermatology”
31 citations
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June 2011 in “Movement Disorders” The document describes a woman with familial Parkinson's disease due to a genetic mutation, showing severe symptoms and poor response to treatment, and suggests finasteride may help reduce symptoms in Tourette syndrome.
5 citations
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January 2018 in “Acta Dermatovenerologica Alpina Pannonica et Adriatica” Congenital atrichia with papular lesions causes permanent hair loss in children.
Trichoepithelioma and desmoplastic trichoepithelioma have distinct features that can be identified using reflectance confocal microscopy.
29 citations
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April 1997 in “Developmental Dynamics” Trypsin slows hair growth and affects color by causing cell death in hair follicles.
11 citations
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January 2014 in “Indian journal of dermatology, venereology, and leprology” Trichosporon inkin and Trichosporon mucoides can cause white piedra on scalp hair.
2 citations
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March 2019 in “Veterinary dermatology” Thymoma in cats can cause hair loss without inflammation.
6 citations
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November 1977 in “Archives of Dermatology” A 6-year-old girl in the U.S. had a rare scalp infection caused by *Trichophyton soudanense*.
January 2023 in “Indian Dermatology Online Journal” A 23-year-old man has a benign, non-progressive hair loss patch that doesn't respond to treatment but can be cosmetically treated.
4 citations
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March 2006 in “Journal of dermatology” A Chinese-Japanese boy had a rare fungal infection on his scalp and skin, likely caught in China.
36 citations
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July 1988 in “Archives of Dermatological Research” Pili annulati is caused by a protein metabolism disorder affecting hair structure.
5 citations
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May 2014 in “Clinical and Experimental Dermatology” Mutations in the desmoplakin gene can cause hair problems and deadly heart disease.